Relationship between serum homocysteine level and oxidative stress in carotid artery atherosclerosis patients with essential hypertension / 中国基层医药

ABSTRACT

Objective To detect the levels of carotid intima-media thickness(CAIMT),serum homocysteine(HCY),malondialdehyde(MDA) and superoxide dismutase(SOD) activity,in order to investigate the correlation between carotid atherosclerosis(CAS) and serum HCY and oxidative stress in essential hypertension(EH) patients.Methods 50 patients with EH and 266 healthy controls were enrolled in this study.The color Doppler ultrasonography was used to detect CAIMT,and circulating enzyme method was used to detect serum HCY,and MDA levels were detected by TBA and SOD activity was detected by colorimetric assay of and the results of the examination were statistically analyzed.Results The incidence rate of CAS in EH patients was 62.8%(167/266),associated with age,disease and related course,and there was no significant difference in gender.In EH concurrent CAS group,the serum HCY level,MDA level and SOD activity were (28.06±6.94)μmol/L,(13.10±2.75)μmol/L and (69.73±6.51)U/mL,respectively,which of the control group were (11.74±3.62)μmol/L,(4.71±1.18)μmol/L and (136.07±10.16)U/mL,respectively,the levels of serum HCY and MDA in EH complicated CAS group were significantly higher than those in the control group(t=7.118,6.326,all P<0.05),and the activity of SOD was significantly decreased.The serum HCY level was positively correlated with MDA level(r=0.493,t=9.207,P<0.05),and negatively correlated with serum SOD activity(r=-0.562,t=11.040,P<0.05).Conclusion EH patients have high levels of HCY,MDA and SOD activity of low levels.HCY level is significantly increased and oxidative stress is increased in CAS patients.Oxidative stress is associated with serum HCY level.